You need a principalkey for every publisher (which you can sniff out of the network connection). Check out the information in the comments on my blog.

Hi,
As I am not a person with a medium (or a low) know-how with regards to Apache, I am stuck without a principal key. However, what I can do is to run a sniffer such a WireShark. Using this method, would I be able to pick-up the PrincipalKey from the logs? Or will the key be encrypted itself? I am asking since I have dawsonera books but no key … ;-/ Thank you kindly.